Spindle and rove stopping assembly for spinning frames and like textile machinery



Dec. 15, 1925- 1,555.725 G FRASER Er AL SPINDLE AND nova s'ro PPIN GASSEMBLY FOR SPINNING FRAMES AND LIKE TEXTILE MACHINERY Filed July 7,1925 2 Sheets-Shoot 1 Dec. 15, 1925. 1,565,725

G. FRASER ET AL srmnu: AND ROVB STOPPING ASSEMBLY FOR srmuma FRAMES ANDLIKE TEXTILE MACHINERY Filed July 7, 1925 2 ShBBtS-ShQOt 2 Patented Dec.15, 1925.

UNITED STATES PATENT, OFFICE.

GORDON FRASER, NORMAN FRASER, AND JOHN FRASER, or ARBROATH, SCOTLAND.

SPINDLE AND ROVE STOPPING ASSEMBLY FOR SPINNING FRAMES AND LIKE TEXTILEMACHINERY.

Application filed July 7, 1825. Se al Nov 41,954.

To all whom it may camera:

Be it known that we, GORDON F nnsnn, NORMAN FRAsEn, and JOHN F nnsnn,all British subjects, and residents of Arbroath,

Scotland, have invented a certain new and useful Improvement in Spindleand Rove Stopping Assemblies for Spinning Frames and like TextileMachinery, of which the following is the specification.

The subject of this invention is an improved spindle and rove-stoppingassembly for spinning frames and like textile machinery socontrivedthat, in the event of breakage of the yarn thread, the spindle and therove feed mechanism may be stopped expedi tiously, leaving the operatorshands free to perform the operation of piecing-up.

Broadly, the invention consists in an assembly for the purpose indicatedcomprising a spindle stop, a rove stop and pedal operated means foractuating the spindlestop and the rove-stop concomitantly.

A practical construction according to the invention is illustrated inthe accompanying drawings in which Fig. 1 is a part elevation partvertical section showing so much of a spinning frame as is necessary forthe understanding of the'invention and Figs. 2 and 3 detail views to alarger scale.

Inthe drawings 1 denotes the spindle which is frictionally driven bythecontact of its wharve 2 with a friction disc 3 on an axis at rightangles to the axis of the wharve, the spindle being carried by a hingerod 4 so mounted that by turning it about its axis the wharve may bemoved away from or towards the friction disc. 5 denotes a lever, rigidlyattached to the lower end of the hing rod 4, and 6 a hinge weightpivoted at 7 which by means of tooth-like projections 6 6 thereon, Fig.3, engaging the lever 5 is capable of urging the lever 5 in eitherdirection and so applying or relieving the driving pressure at thewharve, it being understood that normally the weight 6 urges the lever 5in the direction to apply driving pressure atthe wharve. 8 denotes apedal lever pivoted to the lever 5 at 9, and 10 a lever also pivoted tothe lever 5, as at 11, said lever 10 being engageable by the arm 12 ofthe pedal lever 6 which, when rocked against the stop member 13, tiltsthe lever 10 and thereby lifts the hinge Weight 6, urging the lever 5 inthe direction to relieve the driving pressure at the wharve so that thespindle is stopped.

The lever 10 forms an element not only of the spindle stop unit but alsoof the rove stop unit, as will now be described.

Connected to the lever 10 is the lower end of a rod 14- the upper end ofwhich is con.- nected to one arm 15 of a bell-crank lever pivoted at 16.The other arm 17 of the bellcrank lever carries a pin 18 providing inconjunction with the pin 19 fixed to the bracket 20 a rove-nippingdevice. The bracket 20 is pivoted at 21 on the main bracket 22 andcarries also the pivot 16 and the arbor 23 of the upper presser roller24 co-operating with the continuously driven feed-roller 25. 26 denotesa weighted arm acting on the bracket 20 to urge the roller 24 towardsits fellow roller 25.

The rove 27 taken from the bobbin 28 passes downwardly through thereciprocating rod 29, between the pins 18, 19, between the flutedrollers 24, 25 and thence by way of the conductor 30 between the lowerdrawing rollers 31, 32 of which the roller 31 is continuously driven,and thence to the flyer 33. 7

It will be seen that the operation of the pedal lever 8 which stops thespindle pulls down the rod 14, rocking the bell-crank lever 15, 17 andcausing the rove first to be nipped between the pins 18, 19, the closingof the rove nipping device being followed by conjoint .movement of thelever 15, 17 and bracket 20 upon the. pivot 21 whereby the roller 2 isretracted a short distance from the roller 25, in consequence of whichthe feed of the rove is stopped.

The pedal lever functions as a toggle device serving to maintain thespindle wharve 2 disengaged from the friction disc 3, and the roller 24in retracted position with the nipping device closed.

The rove, being nipped firmly between the pins 18, 19 while the rollers31, 32 continue to rotate, is broken at the bite of the rollers 31, 32,the broken end being left lying in the conductor 30 ready for immediatepiecing up again below the bite of the rollers 31, 32 when a restart ismade by lifting the pedal.

Particular attention is called to the circumstance that the rove isnipped between the pins 18, 19 before it is released by the upperrollers 24:, 2'5 so that th l B Will not I 11111 through between thelower rollers 31, 82 without being drawn. Conversely, the rove is notreleased by the nipping device 18, 19 until after it is fully gripped bythe rollers 2 25.

The present invention permits of substantial economy, besides assuringother important advantages, will be seen by comparison of previouspractice with the practice rendered possible by the invention.

In ordinary spinning frames having no rove stop motion in the event ofbreakage of the yarn about the spinning spindle, the rove coming downfrom the bobbin 28 is belt- ;lorked out between the upper rollers by theoperators fingers and flung over the reciprocatory rod 29. lVhen an endis to be pieced,

-it has to be fed down through the rollers again by hand and bitsplucked off-which is waste-before being led into the conductor 30 to befinally pieced on to the end of yarn led up from the spinning bobbin,the piecing-up operation being one entailing considerable risk ofaccident and necessitating not a little skill on the part of theoperator whose attention is partly taken up by the retaining rollers.

The waste in question is entirely avoided by the invention. Further, asboth hands of the operator are left free to do the piecing up operationbelow the lower drawing rollers, the piecing up operation is muchsimplilied and capable of perforn'iance without the same necessity for"skill and experience as heretofore.

What we claim is:

1. A spindle and rove-stopping assembly for spinning or similar framescomprising a spindle, driver therefor, an upper pair of separablerove-feeding rollers, a rove-nipping device above said feeding rollers,a lower pair of rove-drawing rollers, a conductor to said drawingrollers, and pedaloperated connections for disengaging said spindle fromsaid driver and concomitantly therewith closing said nipping device andseparating said feeding rollers whereby to cause a break in the roveabove said drawing rollers, leaving the rove in said conductor.

2. A spindle and rove stopping assembly for spinning or similar framescomprising a spindle, a driver therefor, an upper pair of r'zeparablerove-feeding rollers, a rove-nipping device above said feeding rollers,a lower pair of rove-drawing rollers, a conduc tor to said-drawingrollers and manually operable means for disengaging said spindle fromsaid driver, closing said nipping device and then moving one of saidfeeding rollers from its fellow feeding roller.

3. In a spinning or similar frame a pair of rove feeding rollers, a pairof rove-nipping members above said feeding rollers, a swing bracketcarrying one of said feeding rollers and one of said nipping membersadapted to swing to move said last named feeding roller towards and awayfrom the other feeding roller, and a lever pivoted to said bracketandcarrying the other nipping member and adapted to be rocked on its pivotto move said nipping member towards and away from the first namednipping member.

l. A spindle and rove stopping assembly for spinning or similar framescomprising, in combination, a driver, a spindle movable towards and awayfrom said driver, an upper pa1r of rove feeding rollers, a rove nippingdevice above said feeding rollers, a lower pair of rove drawing rollers,and connections including a common pedal for moving said spindle awayfrom said driver, closing said nipping device and separating saidfeeding rollers, whereby the nipped rove is broken by the drawing actionof said drawing rollers.

In testimony whereof we have si ned our names to this specification.

GORDON FRASER. NORMAN FRASER. JOHN FRASER.

